Large plate type combined fog-dispersal water-saving closed tower

Abstract

The utility model relates to the technical field of cooling towers, in particular to a large plate type combined fog-dissipation water-saving closed tower which comprises a box body and a fan arranged in the middle of the top surface of the box body, and air cooling modules are arranged at openings in the tops of two side walls of the box body; the evaporative cooling module is arranged in the middle of the inner cavity of the box body in the horizontal direction; the spraying pipe is arranged above the evaporative cooling module, and a plurality of nozzles for spraying to the evaporative cooling module are mounted at the bottom of the spraying pipe; the water collector is arranged above the spraying pipe and is lower than the bottom end of the air cooling module; the two ends of the connecting pipe are connected to the output end of the air cooling module and the input end of the evaporative cooling module correspondingly. The pool is arranged at the bottom of the cavity of the box; the water pump is used for supplying water in the water tank into the spraying pipe; the lower shutter is mounted at an opening in the bottom of the side wall of the box body; the air cooling module and the evaporative cooling module are plate heat exchangers respectively; and the energy consumption of the water-saving closed tower and the occupied space of the heat exchange structure are greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling towers, in particular to a large plate-type combined mist-eliminating and water-saving closed tower. Background Art

[0002] At present, the commonly used large-scale mist-eliminating and water-saving closed tower generally uses a combination of finned tubes and evaporative light tubes for cooling. However, when this type of equipment is used to process the same flow rate and temperature, the finned tubes and evaporative light tubes occupy a large space, the flow resistance in the tube is large, the fins are easily blocked, the system pipeline pump energy consumption is too high; and the fan static pressure is high, and the fan motor energy consumption is also high.

[0003] In view of the above problems, it is urgent to develop a large plate-type combined fog-eliminating and water-saving closed tower. Utility Model Content

[0004] The utility model aims to provide a large plate-type combined demisting and water-saving closed tower, which is used to solve the problems of high energy consumption and large space occupied by the heat exchange structure of the water-saving closed tower in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a large-scale plate-type combined fog-eliminating and water-saving closed tower, comprising a box body and a fan arranged in the middle of the top surface of the box body, the air-cooling module is arranged at the openings at the top of the two side walls of the box body; the evaporative cooling module is arranged in the middle of the inner cavity of the box body along the horizontal direction; the spray pipe is arranged above the evaporative cooling module, and a plurality of nozzles for spraying to the evaporative cooling module are installed at the bottom of the spray pipe; the water collector is arranged above the spray pipe and below the bottom end of the air-cooling module; the two ends of the connecting pipe are respectively connected to the output end of the air-cooling module and the input end of the evaporative cooling module; the water pool is arranged at the bottom of the inner cavity of the box body; the water pump is used to supply water in the water pool into the spray pipe; the lower shutter is installed at the opening at the bottom of the side wall of the box body; the air-cooling module and the evaporative cooling module are plate heat exchangers respectively.

[0006] Preferably, a flow mixer is provided between the two air cooling modules.

[0007] Preferably, an upper louver is provided on the outer side of the air cooling module.

[0008] Preferably, the plate heat exchanger includes side boxes and headers arranged in parallel and a plurality of plate-like shells whose ends are respectively connected to the inner side walls of the side boxes and headers and arranged in parallel. A partition parallel to the plate-like shell is provided in the middle of the inner cavity of the side box, and the outer side walls of the side box are respectively connected to the input port and the output port at positions corresponding to both sides of the partition.

[0009] Preferably, the plate-shaped shell is made of one of stainless steel and thermally conductive plastic.

[0010] Preferably, the fan output end is connected to a kinetic energy recovery type air duct.

[0011] Preferably, the plate-like shell wall is wavy in shape.

[0012] Preferably, the plate heat exchanger comprises a plurality of plate-shaped shells arranged in parallel, and a folded channel is provided in the plate-shaped shells.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model relates to a large-scale plate-type combined demisting and water-saving closed tower in which both the air cooling module and the evaporative cooling module adopt plate heat exchangers, which occupy a small space and have high heat transfer efficiency, and reduce the energy consumption of fans and water pumps. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model as a whole;

[0016] Figure 2 This is a schematic cross-sectional view of the plate heat exchanger of the utility model;

[0017] Figure 3 It is a schematic cross-sectional structure diagram of the plate-shaped shell of the utility model.

[0018] In the figure: 1- fan;

[0019] 2- Air cooling module;

[0020] 3- Upper blinds;

[0021] 4- Flow mixer;

[0022] 5-Connecting pipe;

[0023] 6-Spray pipe;

[0024] 7- Evaporative cooling module;

[0025] 8-Lower shutters;

[0026] 9- Pool;

[0027] 10- Water pump;

[0028] 11- box body;

[0029] 12-side box; 12.1-partition plate; 12.2-inlet; 12.3-outlet;

[0030] 13-header;

[0031] 14- plate-shaped housing;

[0032] 15-Water collector. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] See also Figure 1-2 The utility model provides a technical solution, a large plate-type combined defogging and water-saving closed tower, comprising a box body 11 and a fan 1 arranged in the middle of the top surface of the box body 11, an air cooling module 2 is arranged at the openings on the top of the two side walls of the box body 11, and a mixer 4 is arranged between the two air cooling modules 2. An upper shutter 3 is arranged on the outer side of the air cooling module 2.

[0035] The evaporative cooling module 7 is horizontally arranged in the middle of the inner cavity of the box body 11 , and both ends of the connecting pipe 5 are respectively connected to the output end of the air cooling module 2 and the input end of the evaporative cooling module 7 .

[0036] The spray pipe 6 is arranged above the evaporative cooling module 7 , and a plurality of spray heads for spraying toward the evaporative cooling module 7 are installed at the bottom of the spray pipe 6 .

[0037] The water collector 15 is disposed above the spray pipe 6 and below the bottom end of the air cooling module 2 .

[0038] The water pool 9 is arranged at the bottom of the inner cavity of the box body 11 ; the water pump 10 is used to supply the water in the water pool 9 into the spray pipe 6 ; the lower shutter 8 is installed at the opening at the bottom of the side wall of the box body 11 .

[0039] The air cooling module 2 and the evaporative cooling module 7 are plate heat exchangers, respectively. The plate heat exchanger comprises a side box 12 and a header 13 arranged in parallel, and a plurality of plate-shaped shells 14 arranged in parallel and connected to the inner side walls of the side box 12 and the header 13 at both ends, a partition 12.1 parallel to the plate-shaped shell 14 is provided in the middle of the inner cavity of the side box 12, and an input port 12.2 and an output port 12.3 are connected to the outer side wall of the side box 12 corresponding to the positions on both sides of the partition 12.1.

[0040] In summary, when the fan 1 is started, a part of the outside air enters the bottom of the inner cavity of the box body 11 through the air inlet of the lower louver 8 and forms an upward wind flow; another part of the outside air enters the top of the inner cavity of the box body 11 through the air inlet of the upper louver 3 through the air cooling module 2, and finally the two parts of air are mixed and extracted through the fan 1. The water pump 10 draws spray water from the water pool 9 and supplies it to the spray pipe 6, and the nozzle at the bottom of the spray pipe 6 sprays on the plate-shaped shell 14 of the evaporative cooling module 7.

[0041] The medium to be cooled is connected to the input end of the air cooling module 2. The medium first exchanges heat with the air entering from the air inlet of the upper shutter 3 in the plate-shaped shell 14 of the air cooling module 2. The medium after air cooling then enters the plate-shaped shell 14 of the evaporative cooling module 7 through the connecting pipe 6. Since a uniform water film is formed on the outer wall of the plate-shaped shell 14 of the evaporative cooling module 7 after being sprayed, the water film evaporates continuously and absorbs the heat in the medium, so that the medium is further cooled. The medium after cooling is output to the next process through the corresponding output port 12.3 of the evaporative cooling module 7. Among them, when the medium passes through the plate heat exchanger, it first enters the cavity on one side of the side box 12 from the input port 12.2, then flows to the inner cavity of the header 13 through the channel in the corresponding plate-shaped shell 14, and then flows back to the cavity on the other side of the side box 12 through the channel in another part of the plate-shaped shell 14, and finally flows out from the output port 12.3. An air channel is formed between two adjacent plate-shaped shells 14.

[0042] Most of the spray water sprayed from the spray pipe 6 falls back into the water pool 9 for recycling. The air entering through the air inlet of the lower louver 8 forms saturated wet air after passing through the spray area; when the saturated wet air flows upward through the water collector 15, water droplets are removed. The saturated wet air after water removal passes through the mixer 4 and is mixed with the air passing through the air cooling module 2. The relative humidity of the mixed wet air is reduced, and the saturated air becomes unsaturated air. This part of the mixed air is finally discharged through the fan 1.

[0043] When the ambient temperature is low, the water pump 10 can be turned off to achieve waterless dry operation to meet the temperature reduction and cooling requirements.

[0044] The plate-shaped shell 14 is made of heat-conducting materials such as stainless steel and heat-conducting plastic. The wall of the plate-shaped shell 14 is set in a wave shape or a pattern is set on the wall to increase the heat exchange contact area and improve the heat exchange efficiency.

[0045] The output end of the fan 1 is connected to a kinetic energy recovery type air duct.

[0046] See also Figure 3 For the plate heat exchanger, it can also include a plurality of parallel plate shells 14, in which a folded channel is provided, and the plates are patterned. The two ends of the folded channels in the plurality of plate shells 14 are combined into the inlet and outlet of the cooled medium, and the adjacent sides of the cooled medium channels of the plates are spray water and air channels, which are arranged crosswise.

[0047] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A large plate-type combined fog-eliminating and water-saving closed tower, comprising a box (11) and a fan (1) arranged in the middle of the top surface of the box (11), characterized in that: Also includes: An air cooling module (2), the air cooling module (2) being arranged at an opening at the top of two side walls of the box body (11); An evaporative cooling module (7), the evaporative cooling module (7) being arranged in the middle of the inner cavity of the box body (11) along a horizontal direction; A spray pipe (6), the spray pipe (6) being arranged above the evaporative cooling module (7), and a plurality of spray heads for spraying toward the evaporative cooling module (7) being installed at the bottom of the spray pipe (6); a water collector (15), the water collector (15) being arranged above the spray pipe (6) and below the bottom end of the air cooling module (2); A connecting pipe (5), wherein two ends of the connecting pipe (5) are respectively connected to an output end of the air cooling module (2) and an input end of the evaporative cooling module (7); A water pool (9), the water pool (9) being arranged at the bottom of the inner cavity of the box body (11); a water pump (10), the water pump (10) being used to supply water in the water pool (9) into the spray pipe (6); A lower louver (8), the lower louver (8) being installed at an opening at the bottom of a side wall of the box body (11); The air cooling module (2) and the evaporative cooling module (7) are respectively plate heat exchangers.

2. The large plate-type combined demisting and water-saving closed tower according to claim 1 is characterized in that: A flow mixer (4) is provided between the two air cooling modules (2).

3. The large plate-type combined demisting and water-saving closed tower according to claim 1 is characterized in that: An upper louver (3) is provided on the outer side of the air cooling module (2).

4. The large plate-type combined demisting and water-saving closed tower according to claim 1 is characterized in that: The plate heat exchanger comprises a side box (12) and a header box (13) arranged in parallel, and a plurality of plate-like shells (14) whose two ends are respectively connected to the inner side walls of the side box (12) and the header box (13) and are arranged in parallel. A partition (12.1) parallel to the plate-like shell (14) is provided in the middle of the inner cavity of the side box (12), and an input port (12.2) and an output port (12.3) are respectively connected to the outer side walls of the side box (12) at positions corresponding to both sides of the partition (12.1).

5. The large plate-type combined demisting and water-saving closed tower according to claim 4 is characterized in that: The plate-shaped housing (14) is made of one of stainless steel and heat-conducting plastic.

6. The large plate-type combined demisting and water-saving closed tower according to claim 1 is characterized in that: The output end of the fan (1) is connected to a kinetic energy recovery type air cylinder.

7. The large plate-type combined demisting and water-saving closed tower according to claim 4 is characterized in that: The wall of the plate-shaped shell (14) is in a wave shape.

8. The large plate-type combined demisting and water-saving closed tower according to claim 1 is characterized in that: The plate heat exchanger comprises a plurality of plate-shaped shells (14) arranged in parallel, wherein a folded channel is provided in the plate-shaped shell (14).

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